ABAP Select data from SAP table CMPESFOGEN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMPESFOGEN table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to CMPESFOGEN. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the CMPESFOGEN table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_CMPESFOGEN TYPE STANDARD TABLE OF CMPESFOGEN,
      WA_CMPESFOGEN TYPE CMPESFOGEN,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <CMPESFOGEN> TYPE CMPESFOGEN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CMPESFOGEN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CMPESFOGEN
  INTO TABLE IT_CMPESFOGEN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMPESFOGEN
*  INTO TABLE @DATA(IT_CMPESFOGEN2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_CMPESFOGEN INDEX 1 INTO DATA(WA_CMPESFOGEN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CMPESFOGEN ASSIGNING <CMPESFOGEN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMPESFOGEN>-MANDT = 1.
<CMPESFOGEN>-MANUFACTURINGORDER = 1.
<CMPESFOGEN>-ORDERINTERNALBILLOFOPERATIONS = 1.
<CMPESFOGEN>-MANUFACTURINGORDERCATEGORY = 1.
<CMPESFOGEN>-MANUFACTURINGORDERTYPE = 1.

ENDLOOP.

LOOP AT IT_CMPESFOGEN INTO WA_CMPESFOGEN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMPESFOGEN-PRODUCTIONPLANT, sy-vline,
  WA_CMPESFOGEN-PRODUCTIONPLANTNAME, sy-vline,
  WA_CMPESFOGEN-MATERIAL, sy-vline,
  WA_CMPESFOGEN-MATERIALNAME, sy-vline,
  WA_CMPESFOGEN-MFGORDERPLANNEDTOTALQTY, sy-vline,
  WA_CMPESFOGEN-MFGORDERCONFIRMEDYIELDQTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMPESFOGEN you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_CMPESFOGEN TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_CMPESFOGEN INTO WA_CMPESFOGEN.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field MANUFACTURINGORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMPESFOGEN-MANUFACTURINGORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPESFOGEN-MANUFACTURINGORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMPESFOGEN-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPESFOGEN-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PRODUCTIONUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMPESFOGEN-PRODUCTIONUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPESFOGEN-PRODUCTIONUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SALESDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMPESFOGEN-SALESDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPESFOGEN-SALESDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INSPECTIONLOT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMPESFOGEN-INSPECTIONLOT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMPESFOGEN-INSPECTIONLOT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CMPESFOGEN_STR, 
MANDT TYPE STRING,
MANUFACTURINGORDER TYPE STRING,
ORDERINTERNALBILLOFOPERATIONS TYPE STRING,
MANUFACTURINGORDERCATEGORY TYPE STRING,
MANUFACTURINGORDERTYPE TYPE STRING,
PRODUCTIONPLANT TYPE STRING,
PRODUCTIONPLANTNAME TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
MFGORDERPLANNEDTOTALQTY TYPE STRING,
MFGORDERCONFIRMEDYIELDQTY TYPE STRING,
MFGORDERCONFIRMEDSCRAPQTY TYPE STRING,
PRODUCTIONUNIT TYPE STRING,
ORDERMAINSTATUSNAME TYPE STRING,
MFGORDERPLANNEDSTARTDATE TYPE STRING,
MFGORDERPLANNEDENDDATE TYPE STRING,
SALESDOCUMENT TYPE STRING,
SALESDOCUMENTITEM TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
WBSELEMENTEXTERNALID TYPE STRING,
WBSDESCRIPTION TYPE STRING,
MRPPLANT TYPE STRING,
MRPPLANTNAME TYPE STRING,
MRPAREA TYPE STRING,
MRPCONTROLLER TYPE STRING,
MRPCONTROLLERNAME TYPE STRING,
EFFECTIVITYPARAMETERVARIANT TYPE STRING,
EFFECTIVITYPARAMETERDESC TYPE STRING,
INSPECTIONLOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMPESFOGEN_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_CMPESFOGEN_STR-MANDT sy-vline 
WA_CMPESFOGEN_STR-MANUFACTURINGORDER sy-vline 
WA_CMPESFOGEN_STR-ORDERINTERNALBILLOFOPERATIONS sy-vline 
WA_CMPESFOGEN_STR-MANUFACTURINGORDERCATEGORY sy-vline 
WA_CMPESFOGEN_STR-MANUFACTURINGORDERTYPE sy-vline 
WA_CMPESFOGEN_STR-PRODUCTIONPLANT sy-vline 
WA_CMPESFOGEN_STR-PRODUCTIONPLANTNAME sy-vline 
WA_CMPESFOGEN_STR-MATERIAL sy-vline 
WA_CMPESFOGEN_STR-MATERIALNAME sy-vline 
WA_CMPESFOGEN_STR-MFGORDERPLANNEDTOTALQTY sy-vline 
WA_CMPESFOGEN_STR-MFGORDERCONFIRMEDYIELDQTY sy-vline 
WA_CMPESFOGEN_STR-MFGORDERCONFIRMEDSCRAPQTY sy-vline 
WA_CMPESFOGEN_STR-PRODUCTIONUNIT sy-vline 
WA_CMPESFOGEN_STR-ORDERMAINSTATUSNAME sy-vline 
WA_CMPESFOGEN_STR-MFGORDERPLANNEDSTARTDATE sy-vline 
WA_CMPESFOGEN_STR-MFGORDERPLANNEDENDDATE sy-vline 
WA_CMPESFOGEN_STR-SALESDOCUMENT sy-vline 
WA_CMPESFOGEN_STR-SALESDOCUMENTITEM sy-vline 
WA_CMPESFOGEN_STR-WBSELEMENTINTERNALID sy-vline 
WA_CMPESFOGEN_STR-WBSELEMENTEXTERNALID sy-vline 
WA_CMPESFOGEN_STR-WBSDESCRIPTION sy-vline 
WA_CMPESFOGEN_STR-MRPPLANT sy-vline 
WA_CMPESFOGEN_STR-MRPPLANTNAME sy-vline 
WA_CMPESFOGEN_STR-MRPAREA sy-vline 
WA_CMPESFOGEN_STR-MRPCONTROLLER sy-vline 
WA_CMPESFOGEN_STR-MRPCONTROLLERNAME sy-vline 
WA_CMPESFOGEN_STR-EFFECTIVITYPARAMETERVARIANT sy-vline 
WA_CMPESFOGEN_STR-EFFECTIVITYPARAMETERDESC sy-vline 
WA_CMPESFOGEN_STR-INSPECTIONLOT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.